[78-L] When is a microgroove not a microgroove?

[Bud Black]

Were the 7" 78 rpm Bell recordings from the early '50's microgroove?

Bud

Sent from my iPad

On May 8, 2012, at 8:42 AM, David Lennick <dlennick at sympatico.ca> wrote:

> Definitely vinyl, about the same thickness as a 45 but no raised center.
> 
> dl
> 
> On 5/8/2012 8:38 AM, Ron L'Herault wrote:
>> Vinyl or still shellac?  If shellac, maybe they figured kids were still
>> using steel needle kiddie machines?
>> 
>> Ron
>> 
>> -----Original Message-----
>> From: 78-l-bounces at klickitat.78online.com
>> [mailto:78-l-bounces at klickitat.78online.com] On Behalf Of David Lennick
>> Sent: Monday, May 07, 2012 11:44 PM
>> To: 78L
>> Subject: [78-L] When is a microgroove not a microgroove?
>> 
>> I have 4 7-inch 78s pressed (uncredited) by Decca, given as premiums by the
>> Quaker Oats Company or something like that..the theme and 3 stories in the
>> Sergeant Preston of the Yukon series, issued in 1952. You would think they
>> were microgroove, but a .7 stylus gives a very hissy output..I thought this
>> was poor pressing material, but I tried a 2.0 mil truncated elliptical
>> stylus and the sound was perfect. Discs are near mint, so this doesn't seem
>> to be a matter of the discs having been chiseled out. How come this, how
>> come?
>> 
>> dl
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